| Brand | National Instruments |
|---|---|
| Type | Digital Input Module |
| MPN | NI-9421 |
Check the listing for details. National Instruments NI-9421 C-series 8-Channel 24V Sinking Input cDAQ Module. Condition: Seller refurbished. Listed at 79.99 USD. 250Vrms Ch to Earth Isolation 24 V, 8-Channel (Sinking Input), 100 µs C Series Digital Module -- The NI‑9421 works with industrial logic levels and signals to connect directly to a wide array of industrial switches, transducers, and devices.
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